Jack device for automobiles



June 23, 1925. 1,543,300

C. H. SIMERSON JACK DEVICE FOR AUTOMOBILES Filed Nov. 5, 1921 v I L J 0 /kM/NVENTOR 4 TUR/VEYS Patented June 23, 1925.

UNITED STATES CHARLES H. SIMERSON, or WEST NEW YORK, NEW JERSEY.

JACK DEVICE FOR AUTOMOBILES.

Application filed November T all whom it may concern Be it known that CHARLES H. SIMERsON, a citizen of the United States, residing at d758-d760 Boulevard Vest, Vest New York, 1n the county of Hudson and State of New Jersey, has invented certain new and useful Improvement in Jack Devices for Automobiles, of which the following is a specification.

My invention relates 'to a new and improved jack device for automobiles. Heretofore the customary jacks for lifting the wheels of automobiles have comprised various hand operated devices, which included 5 racks, pawls, worms and the like.

It has been suggested that means operated by the movement of the vehicle itself could be provided for lifting the wheels of the vehicle, but such means have hitherto 20 not proved practical or commercially desirable for various reasons.

According to my invention a very simple and eflicient device is provided, whereby the wheels of the vehicle can be lifted by means :3 of its movement.

Another object of my inventionis to provide a device of this character which is readily detachable and will occupy a very small space.

" Other objects of my invention will be set forth in the following description and drawings, which illustrate a preferred embodiment thereof.

Fig. l is an elevation illustrating my device in an inoperative position.

Fi 2 illustrates my device in an operav tive position.

Fig. 3 .is a section along the line 33 of.

Fig. 2. I,

Fig. 4 is a section along the line 4:4: of Fig. 3.

Fig. 5 is a perspective view showing the parts of my device detached.

My device is intended to be applied t the ordinary wheel of an automobile or the like, having a hub 1, spokes 2, a rim or felly 3 and a tire 4:.

As shown most clearly in Fig. 5, my der vice consists of two parts, namely, a shoe 0 6, and a clamping device 7 The shoe 6, as v clearly shown in Fig. 3, has its inner end adapted to fit over the felly 3, so as to rest snugly a ainst it. The inner part of the shoe 6, which passes within the felly, has a dovetailed guide 8, into which a correspondout of the clamp member 7.

5, 1921. Serial No. 513,005.

ingly shaped projection 9 of the clamp 7,

Hence when the parts are assembled, as shown in Figs. 1,2 and 3, for example, any movement of the clamp 7 with respect to the shoe 6, is prevented, except a'sliding movement parallel to the walls of the guide 8. As shown most clearly in Figs. 3 and 4, the clamp 7 is provided with a clamp projection 10, which may have a pointed end 11, having a wedge shape. This clamp projection 10 is movable and it is internally threaded as shown in F 3. The screw 12 is mounted within the clamp member 7, in a bearing 14, which permits the revolution of the said screw without permitting any axial movement thereof. The screw 12 is provided with a bevel Wheel 15 at the outer end thereof, which cooperates with a bevel gear 16, mounted upon the spindle 17 which is provided with a hand hold' '18.

As. clearly shown in Figs. 3 and t,'the projection 10 is provided with a lug 19, which fits within a groove 20 of the member 7, so as to prevent the revolution of the said member 10 around its axis.

Hence, when the spindle 17 is revolved, the projection member 10 is moved in and The operation of my device is as follows p The shoe 6 is placed upon the felly 3 as illustrated in Fig. 3 for example, with the clamping: member 7 mounted the-rein, as illustrated in Fig. 3. By revolving the spindle'l7, the clamping projection 10 is moved outwardly until the edge thereof contacts with the adjacent inner part of the wheel. Since the parts before described have powerful leverage and since the screw 12 has a very low pitch, so that it is self locking, the shoe 6 is clamped into place and held there with considerable force.

Upon moving the vehicle until the bottom of the shoe 6 contacts with the ground, the said shoe 6 is maintained in position and the result is that the wheel is lifted from the ground and held there as shown in Fig. 2.

It is obvious that the entire device is made of a minimum number of parts, is very sturdy and reliable in operation, and can be applied and detached in a very short period of time.

I have described a preferred embodiment of my invention, but it is clear that numerous changes and omissions can be made without departing from its spirit. For example, if desired, any additional suitable clamping means can be provided for holding the clamping projection 10, when it has been forced into the position shown in Fig. 1.

It is obvious that when the said device is connected with the wheel of the automobile in the manner before described, that it may be useful for a variety'of purposes.

I claim l. A jack device comprising a shoe portion having an inner part adapted to rest against the inner side of the felly of a wheel, a clamp portion having a screw revolubly mounted therein in a bearing adapted to prevent any axial movement of said screw, an internally threaded clamp projection adapted to cooperate with said screw and to be axially moved by the revolution of said screw, and means including a shaft projecting laterally from said clamp portion and connected to said screw adapted to cause the revolution of said screw.

2. In combination, a shoe having an inner part adapted to rest against the inner side of the felly of a wheel having a tire connected thereto, the said shoe projecting beyond said tire, and clamping means adapted to slidably abut the inner part of said shoe so that said clamping means can be slid in a direction substantially perpen dicular to the wheel, said clamping means being adapted to clamp said wheel at the hub' portion thereof, whereby said shoe is then firmly held in position.

3. In combination, a shoe having a portion adapted to rest against the inner side of the felly of a wheel having a tire secured thereto, the said shoe projecting beyond the said tire, the inner face of the said shoe having a guide therein, clamping means adapted to rest Within the said guide, and a clamping projection adapted to be moved to and fro in a radial direction, and means for forcing the said clamping projection against the hub portion of the wheel, so as to tightly clamp the said shoe in position.

4. In combination, a shoe having a pertion adapted to rest against the inner side of the felly of a wheel having a tire secured thereto, the said {shoe projecting beyond the said tire, the said shoe having a guide in the inner face thereof, a clamping member adapted to rest within the said guide, a revoluble screw located within the said clamping member and mounted on a bearing which permits the said screw to revolve about its axis but prevents any axial movement thereof, the said parts being of such configuration that the axis of the said screw is in a substantially radial direction with respect to the said wheel, the said screw being provided with a bevel gear, a second bevel gear meshing with the first bevel gear and mounted upon a spindle provided with a. hand hold, said spindle being secured to the said clamping member, and an internally threaded clamping projection mounted in the said clamping member so as to cooperate with the said screw, and means preventing the revolution of the said clamping member but permitting a movement thereof parallel to the axis of the said screw.

In testimony whereof I hereunto affix my signature.

oHanLEs n. siMEnsoN. 

